Key takeaways
Acetazolamide (generic, formerly branded as Diamox) and Furosemide (Lasix) are both prescription medications used to manage fluid-related conditions, but they belong to different drug classes and have distinct uses. Acetazolamide is a carbonic anhydrase inhibitor that helps with altitude sickness, glaucoma, edema, and epilepsy. It works by affecting your body's fluid and acid-base balance. Furosemide, on the other hand, is a loop diuretic (water pill) primarily used to treat edema due to heart failure, liver, or kidney problems, and it can also lower blood pressure. While both medications help remove excess fluid from the body, acetazolamide is not classified as a diuretic but has diuretic-like effects, whereas furosemide is specifically designed to increase urination. Acetazolamide is available in both immediate-release and extended-release forms, while furosemide is available as a tablet and an oral solution. Common side effects of acetazolamide include tiredness, stomach upset, and numbness, whereas furosemide can cause frequent urination, dizziness, and sensitivity to sunlight. Both medications require careful monitoring for electrolyte imbalances, but furosemide can also cause hearing problems.
